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Method for preparing Sb2O3/carbon felt flexible sodium ion battery anode material

A sodium-ion battery and negative electrode material technology, applied in the direction of electrode manufacturing, battery electrode, chemical electrode manufacturing, etc., can solve the problems of complex process and high cost of raw materials, and achieve simple process, high repeatability, and stable electrochemical cycle performance Effect

Inactive Publication Date: 2019-08-30
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are disadvantages such as complex process and high cost of raw materials in the preparation of the above flexible electrodes.

Method used

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  • Method for preparing Sb2O3/carbon felt flexible sodium ion battery anode material
  • Method for preparing Sb2O3/carbon felt flexible sodium ion battery anode material
  • Method for preparing Sb2O3/carbon felt flexible sodium ion battery anode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] a Sb 2 o 3 The preparation method of carbon felt flexible sodium ion battery negative electrode material, comprises the following steps:

[0028] Step 1: Put the HM-20 carbon felt with a length of 4 cm and a width of 2 cm into 50 mL of acetone and soak for 24 hours to remove surface impurities, then clean it with deionized water and absolute ethanol, and place the cleaned carbon felt in an oven for 60 Dry at ℃; use the dried carbon felt as the anode, the graphite plate as the cathode, and 20g / L ammonium dihydrogen phosphate aqueous solution as the electrolyte to anodize the carbon felt. The electrolysis voltage is 5V for 3 minutes; then the carbon felt Wash them with deionized water and absolute ethanol respectively, and dry them in an oven at 60°C for later use;

[0029] Step 2: Add 0.34 g of antimony trichloride to 20 ml of absolute ethanol and magnetically stir to obtain an antimony trichloride solution, add 0.3 g of sodium hydroxide to 5 ml of deionized water and ...

Embodiment 2

[0034] a Sb 2 o 3 The preparation method of carbon felt flexible sodium ion battery negative electrode material, comprises the following steps:

[0035]Step 1: Put the HM-20 carbon felt with a length of 4 cm and a width of 2 cm into 50 mL of acetone and soak for 72 hours to remove surface impurities, then clean it with deionized water and absolute ethanol respectively, and place the cleaned carbon felt in an oven Dry at 60°C. The dried carbon felt was used as the anode, the graphite plate was used as the cathode, and 20g / L ammonium dihydrogen phosphate aqueous solution was used as the electrolyte to anodize the carbon felt, and the electrolysis voltage was 5V for 5 minutes; Clean with absolute ethanol, put the carbon felt in an oven at 60°C and then dry it for later use;

[0036] Step 2: Add 0.46 g of antimony trichloride to 30 ml of absolute ethanol and magnetically stir to obtain an antimony trichloride solution, add 0.6 g of sodium hydroxide to 10 ml of deionized water a...

Embodiment 3

[0041] a Sb 2 o 3 The preparation method of carbon felt flexible sodium ion battery negative electrode material, comprises the following steps:

[0042] Step 1: Put the HM-20 carbon felt with a length of 4 cm and a width of 2 cm into 50 mL of acetone and soak for 72 hours to remove surface impurities, then clean it with deionized water and absolute ethanol respectively, and then place the carbon felt in an oven for 60 Dry at ℃. The dried carbon felt was used as the anode, the graphite plate was used as the cathode, and the carbon felt was anodized with 20g / L ammonium dihydrogen phosphate aqueous solution as the electrolyte, and the electrolysis voltage was 5V for 10 minutes; then the carbon felt was deionized with deionized Clean the water and absolute ethanol, place them in an oven at 60°C and dry them for later use;

[0043] Step 2: Add 0.57 g of antimony trichloride to 20 ml of absolute ethanol and magnetically stir to obtain an antimony trichloride solution, add 0.6 g o...

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Abstract

The invention provides a method for preparing a Sb2O3 / carbon felt flexible sodium ion battery anode material, comprising a step 1 of immersing and purifying the carbon felt in acetone, and then anodizing and drying the carbon felt; a step 2 of adding antimony trichloride to absolute ethyl alcohol to obtain an antimony trichloride solution, and adding sodium hydroxide to deionized water to obtain asodium hydroxide solution; and a step 3 of adding the sodium hydroxide solution dropwise to the antimony trichloride solution to obtain a mixed solution, immersing the treated carbon felt in the mixed liquid, transferring the mixed solution and the carbon felt to a hydrothermal kettle for a hydrothermal reaction, naturally cooling a reaction product to room temperature, washing the reaction product with deionized water and ethanol, and then drying the reaction product to obtain the Sb2O3 / carbon felt flexible sodium ion battery anode material. By preparing the Sb2O3 / carbon felt flexible electrode material by the hydrothermal method, the Sb2O3 is uniformly grown on the carbon felt. The method of the invention is simple in process, short in period, high in repeatability, low in energy consumption, and low in cost, and has great significance to the research of the flexible sodium ion battery anode material.

Description

technical field [0001] The invention belongs to the technical field of sodium ion batteries, in particular to a Sb 2 o 3 The preparation method of carbon felt flexible sodium ion battery negative electrode material. Background technique [0002] With the rapid development of economy and technology, various energy storage devices are widely used in life and production. Among them, lithium-ion batteries, as one of the most widely used energy storage devices, have been widely studied due to their high energy density. With the consumption of lithium resources, the cost of lithium resources is also rising. For sustainable development, researchers have turned their attention to sodium, which is the same main group as lithium. Sodium not only has large reserves and low mining cost, but also has similar physical and chemical properties to lithium. Therefore, it is of great significance to develop an electrode material for Na-ion batteries with high reversible capacity and high e...

Claims

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Application Information

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IPC IPC(8): H01M4/139H01M4/04H01M4/13H01M10/054
CPCH01M4/049H01M4/13H01M4/139H01M10/054Y02E60/10
Inventor 费杰王娜黄剑锋曹丽云许占位李嘉胤郑欣慧李盟
Owner SHAANXI UNIV OF SCI & TECH
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